Question

solve the following with method and no spam!! -_- ​

Answer 1

(i) => ar (ΔDEF = 1/2 x EF x 12 = 300 cm²

=> EF = 300 x 2 / 12 = 50 cm

(ii) => ar (ΔGEF) = 1/2 x EF x GK

=> 1/2 x 50 x 30 = 500 cm²

(iii) => ar (⬜️DFGE) = ar ΔDEF ar + ΔGEF

=> 300 cm² + 500 cm² = 800 cm²